Features: Professional 7Piece diamonds Grinding Heads Set delivers accuracy polishing, edge trimming, and hole refining across glass, ceramic, and metal with efficient diamonds grits and hexagonal shank compatibilities. Engineered with high hardness diamonds particles combined with manganese steels shafts, these corrosion resistant grinding tool feature 7 size variations for controlled material removal without slippage. Ideal for jewelers shaping intricate metal designs, woodworkers smoothing ceramic edges, and DIYers perfecting glass engraving projects requiring surgical level accuracy. Tackle automotive part deburring, pottery kiln fired glaze adjustments, or hardened alloy surfaces texturing with heat resistant diamonds tip optimized for rotary tool attachments. Each hexagonal shank diamonds burr maintains cutting edges through extended use, offering multiple material versatility from delicate craft modifications to industrial grade metalworking. Specifications: Material: diamonds Grits, High Manganese steels Size: Approx.6x60mm/0.23x2.36inches 6x65mm/0.23x2.55inches Package Includes: 7Pcs Diamonds Grinding Heads Set note: Please allow 1-2cm error due to manual measurement. Please make sure you not mind before you bid. Due to the differences between different monitors, the picture may not reflect the actual color. Thanks!